$110.00$90.20

"I purchased this with a bunch of other parts from Evike to build a whole gun for the first time by myself. I'd had some other friends show me with ones they had built and I figured it was time I did to get more into parts and how they worked.

I was using it in an Aim ABS receiver, the Matrix Magnum torque motor, 7.4 venom lipo battery with a Madbull Ultimate hop up and Black Python Tight Bore Barrel(233mm).

When I measured with my chrono, I was consistently shooting at about 400-415FPS The rate of fire was around 22rps.

It worked great for a day and night op, I brought it home, stored it in my garage for about 3-4 months, took it out, oiled up my mags and used it to play on my birthday last weekend and noticed I had an odd trigger click issue. If I pulled the trigger back too far, it would click and stop shooting. I was able to work through it by shortening my trigger pull, and eventually I ended up duct taping the trigger so it wouldn't go back too far, until I got it home to look at it.

When I took it out, it was cracked on both sides of the gearbox. Once above where the front of the cylinder and again at about 1/2 inch in front of the trigger.

It worked phenomenally the first time I took it out, but it caused me problems the second. I'm hoping mine was just a fluke.

On the bright side, I do have some awesome internals, the bad side is that I have to buy a new gearbox shell to put them in.

by Robert B. on 03/18/2014

"Well first of all it took FOREVER to get here 3 days longer then what they original said. The gearbox as a whole was fine, all the parts worked perfectly except for the gear set. Basically the gears are unusable/defected, the shim selves were missing and which means it cant be shimmed at all and causes the gears to lock up. The real thing that makes me mad is the fact that there is no warranty on the gearbox and evike in there description takes no responsibly in there product which they sold to a loyal customer. Thankfully I have an other high speed gear set to put in. I gave this a generous 3 out of 5 because as a whole it was what I thought it would be. I will still shop at evike but this time more with more caution about what I buy.

by Josephine H. on 09/20/2012

"It's a very good gearbox. I gave it 4/5 because mine came with absolutely no grease/lube anything.

For Experienced players only. This complete gearbox set is essentially a pre-assembled complete reinforced / tune up kit for your M4 / M16 series AEG. Manufactured by Matrix Tactical Systems, one of the most established, reliable and well known Airsoft manufacture in the world. This gearbox is an affordable alternative over the Systema gearbox with 8mm bearing sets. The mecha box shell is modeled after Systema's new gearbox design with thickened shell. With the more stabilized 8mm bearing set, this gearbox is more attractive than ever!

Disclaimer:All complete gearboxes are for experienced Airsoft players only. Evike.com will not be responsible for shimming, usage wear, tear and installation error. All component will be examined to be in perfect condition. There are no warranty on complete gearboxes.

Review:
A good gearbox on par with the KWA M4 gearbox. One advantage of this gearbox over the KWA is that all 6 bearings are standard size 8mm bearings you can buy. Making it much easier to work on. Equipped with a Matrix Turbo motor, this gearbox is the ultimate "high speed setup" that can be completed in minutes.High speed Setup:Many experienced airsoft players turn from high power to "high rate of fire" for reasons such as field fps restrictions. This is done with hours of time shaving down your piston, installing a high speed gear set and high speed turbo motor. The resulting rate of fire is amazing. The draw back is the amount of wear and tear, but the tactical advantage and performance still made this upgrade one of the most high-end / popular upgrade. This gearbox will complete your project most of the way. Evike.com strongly recommend shimming the gearbox again yourself. To slow down the rate of fire / wear and tear, standard gear set, torque motor and/or a weaker spring is recommended.

To install this gearbox on a MOD5 series, although it is a version 2, the nozzle, selector plate and trigger are not the same. Slight work and gearbox knowledge will be required.

This item is currently Out of Stock. Most out of stock items are restocked within 1-3 weeks. Some items may take longer. Please add this item to your wishlist to keep posted on its availability.

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